Summary of Significant Accounting Policies and Other Information - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 439,191	$ 317,889	$ 1,316,187	$ 916,685
Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales	124,174		366,990
Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	172,298		493,250
Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales	57,761		184,922
Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales	27,311		89,362
Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales	29,344		93,434
Industrial Products
Disaggregation of Revenue [Line Items]
Net sales	28,303		88,229
Electronics Segment
Disaggregation of Revenue [Line Items]
Net sales	296,472	175,899	860,240	499,052
Electronics Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales	124,174		366,990
Electronics Segment | Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	172,298		493,250
Electronics Segment | Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Electronics Segment | Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales	0		0
Electronics Segment | Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Electronics Segment | Industrial Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Automotive Segment
Disaggregation of Revenue [Line Items]
Net sales	114,416	113,797	367,718	338,094
Automotive Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales	0		0
Automotive Segment | Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	0		0
Automotive Segment | Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales	57,761		184,922
Automotive Segment | Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales	27,311		89,362
Automotive Segment | Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales	29,344		93,434
Automotive Segment | Industrial Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Industrial Segment
Disaggregation of Revenue [Line Items]
Net sales	28,303	$ 28,193	88,229	$ 79,539
Industrial Segment | Electronics – Passive Products and Sensors
Disaggregation of Revenue [Line Items]
Net sales	0		0
Industrial Segment | Electronics – Semiconductor
Disaggregation of Revenue [Line Items]
Net sales	0		0
Industrial Segment | Passenger Car Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Industrial Segment | Automotive Sensors
Disaggregation of Revenue [Line Items]
Net sales	0		0
Industrial Segment | Commercial Vehicle Products
Disaggregation of Revenue [Line Items]
Net sales	0		0
Industrial Segment | Industrial Products
Disaggregation of Revenue [Line Items]
Net sales	$ 28,303		$ 88,229